6.5

CVE-2020-20222: mikrotik routeros NULL Pointer Dereference

CVSS: 6.5v3.1MediumModified
Published 18-05-2021Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-20222 is a medium (CVSS 6.5) NULL Pointer Dereference vulnerability in mikrotik routeros. EPSS estimates a 3.17% chance of exploitation in the next 30 days, higher than 87.9% of scored vulnerabilities. 2 public exploits are recorded.

Overall risk
37/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (NVD)
EPSS score
3.17%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits2reference

Timeline

  1. 18-05-2021
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

Mikrotik RouterOs 6.44.6 (long-term tree) suffers from a memory corruption vulnerability in the /nova/bin/sniffer process. An authenticated remote attacker can cause a Denial of Service (NULL pointer dereference).

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

3.17%

Chance of exploitation in the next 30 days

Percentile

88%

Versus all other CVEs

30-day change

0.00 pp

From 3.17% on 21-09-2026

21-09-202621-10-2026
EPSS score
3.17%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

2 found
  • referenceUnverified

    Exploit Reference (seclists.org)

    Maturity: unknown

  • referenceUnverified

    Exploit Reference (packetstormsecurity.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Mikrotik1 product

1 vendor · 1 product

References

3 links